Calculator

ABSTRACT

An electronic desk top calculator having a recirculating memory and an arithmetic unit comprising a plurality of single character registers, which are shared with the memory. Data shifting operations, as well as some arithmetic operations, are performed by shifting data entered into an entry register a number of digit order positions controlled by the setting in a decimal point counter. The decimal point counter is controlled by a multiposition switch and other circuitry actuatable by a decimal point key.

1970 R. A. RAGEN 3,546,676

CALCULATOR Filed out, 29, 19 226 Sheets$heet 1 MOCKUP CONSOLE 1 ROBERT ARAGEN I JNVENTOR ATTORNEY Dec. 8, 1970 R. A. RAGEN 3,546,676

CALCULATOR Filed Oct. 29, 1963 226 Sheets-Sheet 2 RELATIVE LEVEL SIGNAL (POLARI'ILY NOT SPECIFIED) MORE NEGATIVE MORE POSITIVE LEVEL SIGNAL LEVEL. SIGNAL IINLII "PL" TRANSITION SIGNAL (DIRECTIO N NOT SPECIFIED) NEGATIVE GOING POSITIVE GOING TRANSITION SIGNAL TRANSITION SIGNAL IINTII II PT" A U \I/ NEGATIVE GOING POSITIVE GOING PULSE SIGNAL PULSE SIGNAL II I ll II FIE E Dec. 8, 1970 R. A. RAGEN 3,546,676

CALCULATOR Filed Oct. 29. 1963 226 sheets sheet 3 FIE. 3

FIE &

I Dec. 8, 1910 R. A. RAGEN 3,546,676

CALCULATOR Filed Oct. 29. 1963 226 Sheets-Sheet 4 ]ICs (NO 330.0.)1

FIIEI E VALUE OF SPEED UP CAPACITOR Cs IN PICOFARADS INDICATES ABSENCE OF 330 OHM RESISTORS LE. SUBSTANTIALLY ZERO IMPEDANCE FROM EACH 8 TERMINAL TO ITS CORRESPONDING BASE.

n 8. 1910 R- A. RAGEN 3,546,676

CALCULATOR Filed 061;. 29. 1963 226 sheets sheet 5 EMITTER FOLLOWER d 1 I I3 1 p q Rg** f 1 k FIE 1III INDICATES PRESENCE OF 05 F I I3 EI VALUE OF GATE CAPACITOR Cg IN pf.

** VALUE OF GATE RESISTOR Rg IN KILOHMS 1970 R. A. RAGEN 3,546,676

CALCULATOR Filed 1963 22s Sheets-Sheet s 8 INPUT FF. FIlE- l1 R. A. RAGEN Dec. 8, 1970 CALCULATOR 226 Sheets-Sheet 7 Filed Oct. 29, 1963 8' INPUT FII3 13 FI E 1 1970 R. A. RAGEN 3,546,676

' CALCULATOR filed 1963 22s Sheets-Sheet a DOTS MAY BE OMITTED WHERE AMBIGUITY WILL NOT RESULT.

FIEn l5 INDEPENDENT GATE INPUTS FIEI 1E 1970 R. A. RAGEN- 3,546,676

cALcuLAfoR Filed Oct. 29, 1963 226 Sheets-Sheet 9 1 I l I FIE- 1II LEFT SET INPUT FIIE- 1B R. A. RAGEN CALCULATOR Dec. 8, 1970 226 Sheets-Sheet 10 Filed Oct. 29. 1963 PI [3 1 El LEFT RESET INPUT 1? I E- I III 1970 R. A. RAGEN 3,546,676

CALCULATOR Filed Oct. 29. 1963 22s Sheets-Sheet 11.

FIE- E1 COMPLEMENT INPUT FIE EE R- A. RAGEN CALCULATOR Dec. 8, 1970 226 Sheets-Sheet 12 FIlE- E3 TRANSFER INPUTS (ONE SET ONLY) FIE- -'i'q:

Filed Oct. 29'. 1963 1970 R. A. RAGEN 3,546,676

CALCULATOR Filed Oct. 29. 1963 226 Sheets-Sheet 13 FIE. a-

TRANSFER INPUTS (THREE SETS) 1970 R. A. RAGEN 3,546,676

CALCULATOR Filed Oct. 29, 1963 226 Sheets-Sheet 14.

F "I I I RIGHT SET INPUT FIE EB R. A. RAGEN CALCULATOR Dec. 8, 1970 226 Sheets-Sheet 15 Filed Oct. 29, 1963 5 i E I F RIGHT RESET INPUT FIE 3CI R. A. RAGEN Dec. 8, 1970 CALCULATOR 228 Sheets-Sheet '16 aged Oct. 29, 1963 1970 R. A. RAGEN 3,546,676

CALCULATOR Filed Oct. 29. 1963 22s Sheets-Sheet 1v FIE 33 FF.

1910 R. A..RAGEN 3,546,676

CALCULATOR Filed Oct. 29. 1965 225 Sheets-Shoot 1B CHG. SGN. FF'

CHNG. SIGN FIE- 3E- FII3 3E 1 0 R. A. RAGEN 3,546,676

CALCULATOR Filed Oct. 29. 1963 2 6 h ts-Sheet 19 I l I I CLR. ALL FF CLR ALL FF FIE-*3? l CLRALL. FF.

R. A. RAGEN Dec. 8, 1970 CALCULATOR 226 Sheets-Sheet 20 Filed Oct. 29, 1963 CLR. ENT.

CLEAR ENTRY I CLR. ENT. FF.

5 E I F 

